Vacuum bags are designed to remove air from the packaging to create a vacuum seal, which helps preserve the freshness of the contents for a longer period of time. The lack of air slows down the oxidation process, preventing spoilage, freezer burn, and the degradation of flavors. Vacuum bags are commonly used in the food industry for packaging meat, fish, and other perishable products, as well as non-food items like clothing or bedding for long-term storage. The bags are typically made from strong, flexible plastic films that can withstand the vacuum sealing process and provide a durable barrier to moisture and air. Vacuum bags also help maximize storage space, as the lack of air allows the products to be tightly packed. They are also used for sous-vide cooking, where food is vacuum-sealed and then cooked in hot water for precise temperature control.
